Odourless by Expella with Geberit Sigma 8 In-wall Cistern for Floor Mount Pans
Odourless by Expella with Geberit Sigma 8 In-wall Cistern for Floor Mount Pans
Odourless by Expella with Geberit Sigma 8 In-wall Cistern for Floor Mount Pans
Odourless by Expella with Geberit Sigma 8 In-wall Cistern for Floor Mount Pans
Odourless by Expella with Geberit Sigma 8 In-wall Cistern for Floor Mount Pans
Odourless by Expella with Geberit Sigma 8 In-wall Cistern for Floor Mount Pans
Odourless by Expella with Geberit Sigma 8 In-wall Cistern for Floor Mount Pans
Odourless by Expella with Geberit Sigma 8 In-wall Cistern for Floor Mount Pans

Odourless by Expella with Geberit Sigma 8 In-wall Cistern for Floor Mount Pans

2504000

$990.00
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Known for quality manufacturing, materials and reliability – the European designed and manufactured Geberit Sigma 8 concealed cistern is now available with Expella’s fully integrated odour extraction system included. Odourless by Expella extracts air from the toilet pan and discharges it directly to the sewer, before odours have a chance to spread through the bathroom. With the cistern and pipes hidden behind the wall and embarrassing odours removed at the source, your bathroom will be kept fresh, modern, uncluttered and hygienic. The Geberit Sigma 8 in-wall cistern has a leak-proof high density one-piece blow moulded HDPE tank and can be combined with your choice of compatible S or P trap toilet pan and flush plate (both sold separately) to complement your bathroom design.


  Download Odourless by Expella with Geberit Sigma 8 fact sheet

Integrated Odourless by Expella system that removes 99.7% of toilet odour before it leaves the bowl

German made, Swiss designed universal cistern compatible with a range of floor mount pans

Match your bathroom aesthetic with your choice of compatible flush plate

  • Water rating: WELS 4 Star at 4.5L flush and 3L flush. LIC. 21.
  • Compliance: Complies with Australian Standards – AS1172.1, AS1172.2, WMTS-425:2016
  • Trap configuration: Universal
  • Water inlet: Top left
  • Power supply: 12 volt, 1.5amp (transformer provided)
  • Fan (Odourless by Expella): Expella I-fan
  • Noise: 41.2 dBA (12 Volt), 36.5 dBA (9 Volt) at 3m
  • Domestic
  • Hotel
  • Commercial

The Geberit Sigma 8 is a standard in-wall cistern with Odourless by Expella pre-installed inside the cistern. The cistern must be installed by a qualified plumber in accordance with AS/NZS 3500. Installation requires the addition of an electrical power source for the Odourless by Expella system. Have a qualified electrician install a general power outlet (GPO) within 3.5 meters of cable length to the toilet. The location of the GPO should allow future access to the 12VDC power transformer.

Expella recommends that the Odourless by Expella system switches on with the Expella PIR Motion Sensor or with the bathroom light, it can also be shared with the exhaust fan switch or by a designated switch depending on your preference.

The Geberit Sigma 8 In-wall Cistern fits a 90mm wall cavity with 600mm stud spacing. It is suitable for timber studs only with a 90x45mm stud cross section.

The Geberit Sigma 8 In-Wall Cistern is compatible with a wide range of floor mount pans. Check the dimensions of your selected pan for exact final set out heights for the flush and waste pipe, prior to installation. Heights may vary depending on the brand and type of pan. 

The cistern is compatible with a wide range of flush plates. Check flush plate specs for cistern compatibility before purchasing and installing. 

A full installation manual is provided with the toilet suite and further information can be found on Expella’s website.

All cistern components (inlet valve, flush valve and Odourless by Expella system) are accessible by removing the flush plate. The Odourless by Expella system is secured within an ultrasonically welded ABS plastic case and requires no maintenance. As with all electrical products, access to the adaptor is recommended.

  • Cistern: 15 years
  • Odourless by Expella: 3 years
  • Inlet and flush valve: 2 years

Warranty applies from date of purchase. Proof of purchase required. Refer to our warranty page for more information.

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